Switch from ATT Grandfathered Unlimited to DirecTV Unlimted?

Does anyone know of any reason not to switch from the ATT grandfathered unlimited to the new unlimited plan? I have two phones on the unlimited plan and one on a defined data plan. I already have DirecTV, I am ok adding the fourth free line, phones are off contract, the new plan is a little cheaper and would allow all phones to be unlimited.

I have held onto my old unlimited plan tightly though and just want to know if there is something I am giving up. Thanks.

As you know the grandfathered version of unlimited doesn't require a direct TV account, so if you ever want to switch cable providers you can do that without losing it. However, if that is not a concern for you there is no problem.

The only bonus you have is free Mexico and Canada if you call retention. Free international messages, but you have to pay DirectTV for lifelong.

If you have no plans to disconnect DirectTV and you save, why not. I like and need free Canada, but I don't want to ruin my roof with DirecTV antenna. If only they give the same plan for 180+30 without DirectTV, I switch there
I heard they going to lunch DirectTV stream soon, I'm sure they will give some promo to support the product.

If you're getting a FAN discount on your minutes plan and data plan, you're only going to get the discount on the base part of the plan, not each line. So you might be paying more. Also if you decide to cancel direct tv, your unlimited data plan will also get cancelled whereas your grandfathered one not linked to your tv account won't have that issue.

I do like how you can get unlimited data on an ipad, that is a game changer.

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